Troubleshooting IMAP Migrations to Office 365

During my day to day work as a part of support organization, I work with and help troubleshoot mailbox migrations very often. One type of migrations that we see quite often is IMAP migrations. I wanted to put together an overview of IMAP migration good practices as well as troubleshooting tips related to IMAP migrations….


Exchange Server 2010 End of Support is (Still) Coming

In April 2018 we blogged about the coming End of Support date for Exchange Server 2010. It’s time for another reminder, but today’s post is extra special. Why? One year from today Exchange Server 2010 will no longer be supported. What does ‘end of support’ mean? Exchange Server, like almost all Microsoft products, has a…


Contextualizing Attacker Activity within Sessions in Exchange Online

Overview The Exchange audit log is an important tool in the defender toolbox to understand the activity of users (or attackers masquerading as users) in an organization. Defenders can manually browse through their audit logs for user activity that indicates malicious activity. These audit logs feed many first-party and third-party protect, detect, and investigate capabilities…


Introducing the Exchange Online Fiddler Extension

Working in support at Microsoft, you get to deal with a lot of organizations who are migrating to Exchange Online. This type of migration dramatically changes how web traffic flows in the organization as the traffic moves away from Exchange on the Local Area Network to servers hosted by Microsoft in a Microsoft Data Center,…


Improvements in Public Folder Migration to Exchange Online

We have been working hard behind the scenes to improve the public folder migration experience and are very glad to announce even more improvements. These improvements will help you in faster onboarding of public folders to Exchange Online. Speed improvements Mailbox Replication Service (MRS) performs certain clean-up tasks during the finalization phase of the migration….


Released: Hybrid Organization Configuration Transfer V2

We are happy to announce Organization Configuration Transfer (OCT) – V2, which includes updates to OCT-Phase 1 that was launched earlier this year. OCT-V2 further reduces the manual work that admins are required to do once the hybrid setup is complete. OCT-V2 is now available as part of the Hybrid Configuration Wizard (HCW). What does…


Announcing support to migrate up to 250K public folders from Exchange On-Premises to Exchange Online

In an earlier post, we announced we were increasing the maximum number of public folders that could be migrated from Exchange Server 2010 to Exchange Online to 250K. We also highlighted in that post that the migration of public folders on Exchange Server 2013 and 2016 were limited to 100K. We’ve been working hard to…


Microsoft Ignite 2018 – The Recap

Microsoft Ignite 2018 ended a few weeks ago, and what a great event it was. It was great to see so many of our customers, partners and friends there – thank you for coming to our sessions, thank you for coming to the booth, thank you for hanging out with us whenever the opportunity arose…


Exchange Server 2019 Now Available

We’re pleased to announce the final build of Exchange Server 2019 is now available and can be downloaded from the Volume Licensing Service Center. Exchange Server 2019 is designed to deliver security, performance and improved administration and management capabilities; attributes our largest on-premises customers expect from Exchange. If you haven’t yet seen the session delivered…


Announcing Support for Controlled Connections to Public Folders in Outlook

Up to now, Administrators did not have control over which users would see public folders in their Outlook clients. If public folders were created within the organization or if an Exchange Online organization is configured to access on-premises public folders, all clients would make a connection to and show the “Public folders” object in Outlook….